(CNN) - On Tuesday, the Republican ticket plans to visit Pennsylvania, a state that is key to their electoral map strategy.

Republican presidential nominee John McCain trails his Democratic opponent by double digits in recent polls conducted in the state, but the campaign has said they are buoyed by internal numbers not showing up in public polling.

McCain's schedule calls for rallies in Hershey and Quakertown, Pennsylvania. Republican vice presidential nominee Sarah Palin is expected to join him at both rallies.

McCain is then scheduled to travel to Fayetteville, North Carolina, for a rally.

Palin, meanwhile, will continue to campaign in Pennsylvania, attending rallies in Shippensburg and University Park.

The most recent CNN Poll of Polls in Pennsylvania showed Democratic presidential nominee Barack Obama leading McCain by 10 points, 51 percent to 41 percent. The polls were conducted October 16 through October 22.